Screen.



C. BAUER.

SCREEN. APPLICATION FILED AUG-22,1913- RENEWED JULY 24.1915.

Patented Sept. 7, 1915.

2 SHEETS-SHEET! 6i @Md/ WITNESSES C. BAUER.

SCREEN. APPLICATION FILED Aus.22.1913. RENEWED JULY 24.1915.

Patented Sept. 7, 1915.

2 SHEETS-SHEET 2.

'INVENTOR 1 To all whom, it may concern:

'- Be it. known that I, CONRAD zen of the United States'of America, residing at- Pittsburgh, in the county of Al1e-:

- SCREEN.

' Specification of Letters Patent. Patented Sept. 1915.

Application filed August 22, 1913, Serial No. 786,085, Renewed July 24, 1915. Serial No. 41,798.

gheny and State of Pennsylvania, have invented new and useful Improvements in Screens, of which the following is a. full,- clear, and exact description, reference being had to the accompanyingdrawings, which' form part of this specification.

This invention relates to improvements. in

fly screens and has particular referenceto such screens of the rolling type; this inven vtion being especially designed to overcome 15 the difliculties heretofore encountered in the use of-wire netting for screens which are not permanently supported-in rigid frames. It is a well known fact that the tendency of the stiff material of a wire screen is to kink and wrinkle and become misshaped. That is, it readily bends and normally retains a curved or wavy set as it is unrolled'. By my invention I overcomethese difliculties'by employing means which, while permitting the screen to be wound upon a roller, maintains said screen in a taut condition free from wrinkles or waves.

It consists in the v combination and arrangement of parts to be hereinafter more fully described.

Figure 1 isa vertical sectional view of a window provided with myimproved screen;

showing the roller as mounted within the upper chamber of the window frame or housing; Fig. 2is an enlarged fragmentary elevational v1ew showing a tension devlce associated with the lower end of the screen;

, Fig. 3 is a modified sectional view showing my screen as applied to the outside of an ordinary window frame or similar frame of an opening; Fig. 4 is-an enlarged vertical sectional view through the roller of the screen and associated mechanism and showmg a cushioned stop-or abutment for the roller, to be hereinafter more fully described; Fig. 5 is an enlarged elevational view of the lower portion of the screen and the end weight or slat .thereof,'showing my invention as applied to screens 'of' great width; a portion of the lower slat being re-. movedto ehowthe clamping means and the BAUER, a citiscreen beinglowered to a. position prepara tory to stretching and locking in closed position; and Fig. 6 is a'similar view showing Where the screen is to be installed in win Q dows or other openings which do not provide or permit of the provision of such an upper chamber 4, said screen may be mounted within the suitable casing 5 at the top of the window. Upon the roller 2 the wire netting or screen 6 is wound, said screen being attached to the roller in any suitable manner. Attached to the lower end of the screen is aslat 7 which is preferably metallicand of such weight as to hold the screen in a taut condition when the said screen is suspended from the roller in the'manner shown in Fig. 1.. If desired, saidweight may take the form of construction disclosed in my Patent No. 1,002,360, dated September 5th,

As shown in Figs. 1, 3 and 4 the roller 2 is provided with'a pivotal dog or stop finger Swhich, when the screen is unrolled, drops into a position receivable by a stop or abutment 9 carried by the window frame or any other suitable support. When the screen is.

rolled up or wound upon the roller 2 the dog 8 occupies a position in a recess 11and flush with the surface of the roller; said dog having a curvature conforming to the circumferential surface of the roller so as to present noobstr'uction to even and symmetrical rolling of'the screen upon the roller. 1 i 1 The roller may be operated n any suitable manner, as by a sprocket or gear 12 (see Fig.

1) carried by the roller and an operatingchain 13 associated therewith, as described in my above mentioned Patent No. 1,002,360. It will be seen that when the screen is lowered to the position shown in Fig. 1, it.

weight 7 and lowering of the screen will 106 movement of the roller through action of the l bring the dog into abutment with the'stop 9 thereby limiting or preventing further so as to draw the screen to a taut condition,

the roller being anchored, as above described, and" therefore not rotating or yielding under the clampingaction of the member 14.

The dogs 8 may bespaced along the roller as desired, and where it is desired to stretch a screen which is of more than the ordinary width, as in large windows or porch screens,

-I provide a suitable form of clamp which enables a uniform clamping effect along the extended weight or bottom slat, with the manipulation of a single handle or. lever.

Such an arrangement isshown in Figs. 5 and 6 whereinthe lower slat 7 is indicated as having a chamber or recess 17 in which are housed pivotal clamping bars or rods,

" 18 adapted to bebrought into terminal enconnected to the inner ends 1 gagement with pockets or recesses 19 formed in the upright'members 20 or sides of the window frame. The bars 18 are fulcrumed or pivoted as at 21 and connected with the inner ends of the rods 18 is the toggle link arrangement 22 carried by a vertically shiftable or upwardly extending block or finger 23 arranged for cooperative association with which is an eccentric-lever or cam member 24' pivoted to the slat 7 and provided with' a suitable operating handle 25.

The numeral 26 indicates a coil/spring and which tends to normally hold the said rods or bars in a retracted position, as shown I in Fig. 5,

whilea leaf spring 27 tends normally to urge the toggle arrangement and member 23 upwardly as also shown in Fig. 5.

en the screen, is lowered to the position shown in Fig, ,5 (bearing in mind "that the roller is anchored or prevented from rotatmg after lowering of the screen as above described) by shifting the handle 25 of the cam 24 said cam will bear 'against and depress the member 23 in such manner as to force and spread apart the'toggle links 22 against the tension, of the spring 26, thereby bringing the outer ends of the bars 18 into engagementwith the pockets 19; the ful crum 21. of the bars being such as to permit of longitudinal movement of said bars, as by the provision of elongated slots 28. Upon the weight 7 may be providedthe movement of the roller it will be by the roller,

of the rods 18 the combination with shifting of the cam member 24 to the position shownin Fig. 6, the member 23 will be so depressed as to bring the lower bearing piece or shoulder 29 thereof into such engagement with the top edges of the bars 18 as to in turn depress or force downwardly the inner ends of the bars causing said bars 18 to swing on the pivotal. points or fulcrums 21, with the result that inasmuch as the bars engage the side pockets 19 the lower slats 7 will be forced downwardly'to the position shown in Fig. 6, thereby bringing the screen to a taut condition.

As shown in Fig. 4, the abutment 9 may be provided with a yielding stop or spring pressed finger 9 adapted to cushionthe ramming movement or engagemnet of the dog 8 with the abutment. Also such'flexibility is advantageous in that it affords a yielding tension to the clamping action described above.

It will be apparent that many changes maybe made in the construction shown and described without departing from my inven; tion. While I have shown a particular form of clamping means and device for limiting apparent, without necessity of specific illustration, that such elementsmaybe changed Without departing from their function.

aving thus described my invention, what I claim and desire to secure by Letters Patent isi 1. In a.device of the character described, the combination with a frame, of a roller mounted at the top thereof, a screen carried a stop carried by theframe, a pivotal dog associated with the roller and adapted tojbe brought into abutment with the stop, for limiting the rotatory travel of the roller and dependentfor operation upon unwinding of the screen from the roller, and means cooperatingv with said limiting means, for stretching the screen to a taut condition.

2. In a device of the character described, the combination with a frame, of a roller mounted at the top thereof, a screen carried by the roller, means for actuating said roller whereby the screen'may be raised and lowered in the frame, a stop carried by the frame, a pivotal dog associated with the,

roller and adapted to be brought into abutment with the stop, for limiting the rotatory travel of the roller, and means cooperating withthe limiting means, for stretching the screen to a taut condition.

3. In a device of the character described,

screen operatively mounted in said frame .work, a bar carried by. the lower end of said screen, a plurality of clamping rods associated with said bar,for drawing the screen to a taut condition, andan actuating device commonly associated with said rods.

a frame work, of a screen, a plurality of clamping members associated with said bar, for drawing the screen to a taut condition; and a cam member mounted intermediate the ends of the bar and adapted to commonly actuate the said clamping members. 10

In testimony whereof; I have hereunto set my hand in the presence of two witnesses.

CONRAD BAUER. Witnesses M. A. KEIZLER, MARY BARrH. 

